If you control a man's head you can control his body. In this instance we just witnessed you can grab his ears, hair, eyes. throat or fulcrum from behind. You can then get him off the victim and break the attacker's balance by twisting and turning him while you are bringing him backward and down.

These moves are easy and quite effective, even for a smaller person against a larger person.

However, I am not certain what these drugs are doing to the pain threshold of the attackers. Just know that fingers plunged into the eyes of an attacker will almost always put you at an advantage.